Sunday, August18, 2019 L-36.com


Marine Weather and Tides
Seabrook, TX

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:48AMSunset 7:59PM Sunday August 18, 2019 1:32 AM CDT (06:32 UTC) Moonrise 9:05PMMoonset 8:25AM Illumination 93% Phase: Waning Gibbous; Moon at 17 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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GMZ335 Galveston Bay- 1045 Pm Cdt Sat Aug 17 2019
Rest of tonight..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers after midnight.
Sunday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms until late afternoon.
Sunday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Monday..South winds 5 to 10 knots. Bay waters smooth. Showers likely in the morning. A chance of Thunderstorms. A chance of showers in the afternoon.
Monday night..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers in the evening, then a chance of showers after midnight.
Tuesday..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and a slight chance of Thunderstorms.
Tuesday night..South winds 5 to 10 knots becoming southwest after midnight. Bay waters smooth. A slight chance of showers and Thunderstorms in the evening, then a chance of showers and Thunderstorms after midnight.
Wednesday..Southwest winds 5 to 10 knots becoming south in the afternoon. Bay waters smooth. A chance of showers and Thunderstorms.
Wednesday night..South winds around 10 knots becoming southwest after midnight. Bay waters smooth to slightly choppy becoming smooth after midnight. A slight chance of showers and Thunderstorms after midnight.
Thursday..Southwest winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A chance of showers and Thunderstorms.
Thursday night..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 1045 Pm Cdt Sat Aug 17 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Light to moderate onshore flow with slightly higher wind speeds tonight gradually diminishing after Sunrise. Winds may become gusty and erratic near any Thunderstorms that do form early Sunday morning. High pressure building into the region through next week will bring more relatively quiet weather.


7 Day Forecast for Marine Location Near Seabrook, TX
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location: 29.61, -94.98     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 180437
afdhgx
area forecast discussion
national weather service houston galveston tx
1137 pm cdt Sat aug 17 2019

Aviation [06z TAF issuance]
Vfr overnight with patchy MVFR ceilings possible near cll close to
sunrise. Expect southerly winds to remain throughout the night and
become more southwesterly after sunrise and increase becoming
gusty. Trend in short term guidance is for more showers to develop
before sunrise and spread into the coastal counties. Already had
this covered in the previous tafs and will continue with this
scenario. Tsra developing 17z and shifting into the houston metro
taf areas with vcts for now but hou iah could have impacts in the
mid afternoon hours. S W moving through the area late
afternoon evening may bring an increase in high clouds and may
help keep ci debris around longer than the short lived ci debris
from today's storms.

45

Prev discussion issued 832 pm cdt Sat aug 17 2019
Discussion
Precip has dissipated W the loss of heating. Forecast of persistence
looks the be the rule again tonight and Sunday. Ongoing fcst
looks fine... Just tweaked grids to match obs trends for the
update. 47

Preliminary point temps pops
College station (cll) 79 100 78 99 77 0 10 0 20 0
houston (iah) 80 96 80 95 79 10 20 10 50 10
galveston (gls) 84 91 84 90 83 20 20 10 60 30

Hgx watches warnings advisories
Tx... None.

Gm... Small craft should exercise caution until 7 am cdt Sunday for
the following zones: coastal waters from freeport to
matagorda ship channel tx out 20 nm... Waters from freeport
to matagorda ship channel tx from 20 to 60 nm.

Short term... 47
aviation... 45


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGPT2 - 8770613 - Morgans Point, TX 5 mi50 min S 7 G 11 85°F 89°F1012.6 hPa
EPTT2 - 8771013 - Eagle Point, TX 10 mi50 min S 12 G 14 86°F 88°F1011.9 hPa
NCHT2 - 8770777 - Manchester, TX 17 mi50 min SSW 2.9 G 5.1 83°F 88°F1012.2 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 22 mi50 min S 16 G 18 87°F 88°F1011.8 hPa
GRRT2 22 mi50 min SSW 12 G 15 86°F 88°F1012.2 hPa
GTOT2 23 mi50 min S 9.9 G 15 86°F 88°F1012.6 hPa
RLOT2 - 8770971 - Rollover Pass, TX 26 mi44 min S 6 G 11 85°F 90°F1013 hPa
HIST2 31 mi50 min S 7 G 12 85°F 89°F1012.5 hPa
KXIH 38 mi37 min S 15 86°F 77°F
LUIT2 38 mi44 min S 8.9 G 13 86°F 88°F1012.5 hPa
42035 - GALVESTON 22NM East of Galveston, TX 40 mi32 min S 14 G 18 88°F 1013.6 hPa (+0.7)82°F
42043 - GA-252 TABS B 44 mi92 min S 14 G 16 88°F1012.2 hPa (+1.0)
FCGT2 - 8772447 - USCG Freeport, TX 49 mi50 min S 15 G 17 86°F 87°F1012.9 hPa
FPST2 49 mi50 min SSE 17 G 19 86°F 86°F1012.1 hPa

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX10 mi1.7 hrsS 610.00 miA Few Clouds82°F75°F79%1011.8 hPa
Houston, Pearland Regional Airport, TX15 mi1.7 hrsS 310.00 miFair83°F75°F79%1012.8 hPa
Houston, Houston Hobby Airport, TX16 mi1.7 hrsSSE 510.00 miA Few Clouds83°F75°F79%1012.7 hPa
John Dunn Helistop, TX23 mi57 minN 010.00 miFair82°F75°F79%1012.9 hPa
Galveston, Scholes Field, TX24 mi1.7 hrsS 1310.00 miA Few Clouds87°F78°F75%1012.7 hPa

Link to 5 minute data for KEFD

Wind History from EFD (wind in knots)
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Last 24hrCalmS4CalmCalmCalmCalmS5S6SW5S8S5S8S7S13
G18
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1 day agoCalmSW4SW3SW5SW3CalmCalmW5W5N5SE1NE6E6SE6SE6SE7SE8SE7SE7SE5SE5SE4SE5S4
2 days agoNW4--NW3--W2CalmCalm--N3CalmNW5N3--W3E5S3SE10E9E6E3E4E4CalmCalm

Tide / Current Tables for Barbours Cut, Morgans Point, Galveston Bay, Texas
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
Click for Map
Sun -- 12:36 AM CDT     -1.21 knots Max Ebb
Sun -- 04:15 AM CDT     0.00 knots Slack
Sun -- 06:49 AM CDT     Sunrise
Sun -- 07:34 AM CDT     1.43 knots Max Flood
Sun -- 09:25 AM CDT     Moonset
Sun -- 12:01 PM CDT     -0.00 knots Slack
Sun -- 03:20 PM CDT     -0.90 knots Max Ebb
Sun -- 07:45 PM CDT     -0.06 knots Min Ebb
Sun -- 07:56 PM CDT     Sunset
Sun -- 10:03 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.2-1.2-1.1-0.7-0.20.51.11.41.41.20.90.40-0.4-0.7-0.9-0.9-0.6-0.3-0.1-0.1-0.2-0.3-0.5

Weather Map and Satellite Images
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wmap_A
GOES Local Image of SouthCentralPlains    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (2,6,7,8)
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Ground Weather Radar Station Houston/Galveston, TX
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weather_mapweather_map weather_map

Gulf Stream Current


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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.